<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <title>响应式菜单</title>
</head>
<link rel="stylesheet" href="index.css">

<body>
    <nav>
        <div class="logo">哈哈</div>
        <ul class="nav-menu">
            <li>homepage
                <!-- <ul>
                    <li>homepage1</li>
                    <li>homepage1</li>
                    <li>homepage1</li>
                </ul> -->
            </li>
            <li>database</li>
            <li>software</li>
            <li>os</li>
            <li>dev</li>
        </ul>
        <div class="burger">
            <div class="top-line"></div>
            <div class="middle-line"></div>
            <div class="bottom-line"></div>
        </div>
    </nav>
    <header></header>
    <script src="index.js"></script>
</body>

</html>